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Alfred Pérot
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Alfred Pérot

French scientist
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Alfred Pérot was a French physicist known for his work in optics, particularly in the development of interferometers. He collaborated with Charles Fabry to create the Fabry-Pérot interferometer in 1897. This instrument, consisting of two highly reflective, parallel plates called an etalon, was crucial for precisely measuring the wavelengths of light and studying spectral line structures. Pérot's contributions advanced the understanding and measurement of light, impacting fields from spectroscopy to the determination of fundamental physical standards like the meter.12

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6 Britannica Sources
  1. optical interferometer
  2. spectrometer
  3. Charles Fabry
  4. Armand-Hippolyte-Louis Fizeau
  5. Augustin-Jean Fresnel
  6. light - Ray theories in the ancient world

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